ResearchRouting table, RPKI, IRR & looking glass

AS131941 Entsu Co.,Ltd.

AS131941 (ENTSU-NET) is registered to Entsu Co.,Ltd. in JP. It originates 6 prefixes in the global routing table.

6
IPv4 prefixes
0
IPv6 prefixes
1,024
IPv4 addresses
0%
RPKI valid

Who holds AS131941

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS131941
Handle
ENTSU-NET
Organization
Entsu Co.,Ltd.
Country
JP
ASPA
None published

What AS131941 announces

Prefixes originated by AS131941 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
6
IPv6 prefixes
0
IPv4 addresses
1,024 (4 /24s)
RPKI valid
0 0%
RPKI invalid
0
RPKI not found
6
ROAs naming AS131941
0
With an IRR route object
1 16%

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

Who AS131941 is reached through

The AS just before AS131941 in the paths our looking glass collectors hold, for 6 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
RADBMYASNAME-1MAINT-AS131941

Route objects with origin AS131941: RADB 2

as-sets that list AS131941 (6)